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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (C) 2007 The Guava Authors<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<span class="sourceLineNo">005</span> * you may not use this file except in compliance with the License.<a name="line.5"></a>
<span class="sourceLineNo">006</span> * You may obtain a copy of the License at<a name="line.6"></a>
<span class="sourceLineNo">007</span> *<a name="line.7"></a>
<span class="sourceLineNo">008</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<span class="sourceLineNo">011</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<span class="sourceLineNo">012</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<span class="sourceLineNo">013</span> * See the License for the specific language governing permissions and<a name="line.13"></a>
<span class="sourceLineNo">014</span> * limitations under the License.<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>package com.google.common.collect;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import static com.google.common.base.Preconditions.checkArgument;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import static com.google.common.base.Preconditions.checkNotNull;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>import com.google.common.annotations.Beta;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import com.google.common.annotations.GwtCompatible;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import com.google.common.base.Objects;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import com.google.common.collect.Multiset.Entry;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import com.google.common.primitives.Ints;<a name="line.26"></a>
<span class="sourceLineNo">027</span><a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.io.Serializable;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.util.Collection;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.util.Collections;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import java.util.Comparator;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import java.util.Iterator;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import java.util.List;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import java.util.NoSuchElementException;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import java.util.Set;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import java.util.SortedSet;<a name="line.36"></a>
<span class="sourceLineNo">037</span><a name="line.37"></a>
<span class="sourceLineNo">038</span>import javax.annotation.Nullable;<a name="line.38"></a>
<span class="sourceLineNo">039</span><a name="line.39"></a>
<span class="sourceLineNo">040</span>/**<a name="line.40"></a>
<span class="sourceLineNo">041</span> * Provides static utility methods for creating and working with {@link<a name="line.41"></a>
<span class="sourceLineNo">042</span> * Multiset} instances.<a name="line.42"></a>
<span class="sourceLineNo">043</span> *<a name="line.43"></a>
<span class="sourceLineNo">044</span> * &lt;p&gt;See the Guava User Guide article on &lt;a href=<a name="line.44"></a>
<span class="sourceLineNo">045</span> * "http://code.google.com/p/guava-libraries/wiki/CollectionUtilitiesExplained#Multisets"&gt;<a name="line.45"></a>
<span class="sourceLineNo">046</span> * {@code Multisets}&lt;/a&gt;.<a name="line.46"></a>
<span class="sourceLineNo">047</span> *<a name="line.47"></a>
<span class="sourceLineNo">048</span> * @author Kevin Bourrillion<a name="line.48"></a>
<span class="sourceLineNo">049</span> * @author Mike Bostock<a name="line.49"></a>
<span class="sourceLineNo">050</span> * @author Louis Wasserman<a name="line.50"></a>
<span class="sourceLineNo">051</span> * @since 2.0 (imported from Google Collections Library)<a name="line.51"></a>
<span class="sourceLineNo">052</span> */<a name="line.52"></a>
<span class="sourceLineNo">053</span>@GwtCompatible<a name="line.53"></a>
<span class="sourceLineNo">054</span>public final class Multisets {<a name="line.54"></a>
<span class="sourceLineNo">055</span>  private Multisets() {}<a name="line.55"></a>
<span class="sourceLineNo">056</span><a name="line.56"></a>
<span class="sourceLineNo">057</span>  /**<a name="line.57"></a>
<span class="sourceLineNo">058</span>   * Returns an unmodifiable view of the specified multiset. Query operations on<a name="line.58"></a>
<span class="sourceLineNo">059</span>   * the returned multiset "read through" to the specified multiset, and<a name="line.59"></a>
<span class="sourceLineNo">060</span>   * attempts to modify the returned multiset result in an<a name="line.60"></a>
<span class="sourceLineNo">061</span>   * {@link UnsupportedOperationException}.<a name="line.61"></a>
<span class="sourceLineNo">062</span>   *<a name="line.62"></a>
<span class="sourceLineNo">063</span>   * &lt;p&gt;The returned multiset will be serializable if the specified multiset is<a name="line.63"></a>
<span class="sourceLineNo">064</span>   * serializable.<a name="line.64"></a>
<span class="sourceLineNo">065</span>   *<a name="line.65"></a>
<span class="sourceLineNo">066</span>   * @param multiset the multiset for which an unmodifiable view is to be<a name="line.66"></a>
<span class="sourceLineNo">067</span>   *     generated<a name="line.67"></a>
<span class="sourceLineNo">068</span>   * @return an unmodifiable view of the multiset<a name="line.68"></a>
<span class="sourceLineNo">069</span>   */<a name="line.69"></a>
<span class="sourceLineNo">070</span>  public static &lt;E&gt; Multiset&lt;E&gt; unmodifiableMultiset(<a name="line.70"></a>
<span class="sourceLineNo">071</span>      Multiset&lt;? extends E&gt; multiset) {<a name="line.71"></a>
<span class="sourceLineNo">072</span>    if (multiset instanceof UnmodifiableMultiset ||<a name="line.72"></a>
<span class="sourceLineNo">073</span>        multiset instanceof ImmutableMultiset) {<a name="line.73"></a>
<span class="sourceLineNo">074</span>      // Since it's unmodifiable, the covariant cast is safe<a name="line.74"></a>
<span class="sourceLineNo">075</span>      @SuppressWarnings("unchecked")<a name="line.75"></a>
<span class="sourceLineNo">076</span>      Multiset&lt;E&gt; result = (Multiset&lt;E&gt;) multiset;<a name="line.76"></a>
<span class="sourceLineNo">077</span>      return result;<a name="line.77"></a>
<span class="sourceLineNo">078</span>    }<a name="line.78"></a>
<span class="sourceLineNo">079</span>    return new UnmodifiableMultiset&lt;E&gt;(checkNotNull(multiset));<a name="line.79"></a>
<span class="sourceLineNo">080</span>  }<a name="line.80"></a>
<span class="sourceLineNo">081</span><a name="line.81"></a>
<span class="sourceLineNo">082</span>  /**<a name="line.82"></a>
<span class="sourceLineNo">083</span>   * Simply returns its argument.<a name="line.83"></a>
<span class="sourceLineNo">084</span>   *<a name="line.84"></a>
<span class="sourceLineNo">085</span>   * @deprecated no need to use this<a name="line.85"></a>
<span class="sourceLineNo">086</span>   * @since 10.0<a name="line.86"></a>
<span class="sourceLineNo">087</span>   */<a name="line.87"></a>
<span class="sourceLineNo">088</span>  @Deprecated public static &lt;E&gt; Multiset&lt;E&gt; unmodifiableMultiset(<a name="line.88"></a>
<span class="sourceLineNo">089</span>      ImmutableMultiset&lt;E&gt; multiset) {<a name="line.89"></a>
<span class="sourceLineNo">090</span>    return checkNotNull(multiset);<a name="line.90"></a>
<span class="sourceLineNo">091</span>  }<a name="line.91"></a>
<span class="sourceLineNo">092</span><a name="line.92"></a>
<span class="sourceLineNo">093</span>  static class UnmodifiableMultiset&lt;E&gt;<a name="line.93"></a>
<span class="sourceLineNo">094</span>      extends ForwardingMultiset&lt;E&gt; implements Serializable {<a name="line.94"></a>
<span class="sourceLineNo">095</span>    final Multiset&lt;? extends E&gt; delegate;<a name="line.95"></a>
<span class="sourceLineNo">096</span><a name="line.96"></a>
<span class="sourceLineNo">097</span>    UnmodifiableMultiset(Multiset&lt;? extends E&gt; delegate) {<a name="line.97"></a>
<span class="sourceLineNo">098</span>      this.delegate = delegate;<a name="line.98"></a>
<span class="sourceLineNo">099</span>    }<a name="line.99"></a>
<span class="sourceLineNo">100</span><a name="line.100"></a>
<span class="sourceLineNo">101</span>    @SuppressWarnings("unchecked")<a name="line.101"></a>
<span class="sourceLineNo">102</span>    @Override protected Multiset&lt;E&gt; delegate() {<a name="line.102"></a>
<span class="sourceLineNo">103</span>      // This is safe because all non-covariant methods are overriden<a name="line.103"></a>
<span class="sourceLineNo">104</span>      return (Multiset&lt;E&gt;) delegate;<a name="line.104"></a>
<span class="sourceLineNo">105</span>    }<a name="line.105"></a>
<span class="sourceLineNo">106</span><a name="line.106"></a>
<span class="sourceLineNo">107</span>    transient Set&lt;E&gt; elementSet;<a name="line.107"></a>
<span class="sourceLineNo">108</span><a name="line.108"></a>
<span class="sourceLineNo">109</span>    Set&lt;E&gt; createElementSet() {<a name="line.109"></a>
<span class="sourceLineNo">110</span>      return Collections.&lt;E&gt;unmodifiableSet(delegate.elementSet());<a name="line.110"></a>
<span class="sourceLineNo">111</span>    }<a name="line.111"></a>
<span class="sourceLineNo">112</span><a name="line.112"></a>
<span class="sourceLineNo">113</span>    @Override<a name="line.113"></a>
<span class="sourceLineNo">114</span>    public Set&lt;E&gt; elementSet() {<a name="line.114"></a>
<span class="sourceLineNo">115</span>      Set&lt;E&gt; es = elementSet;<a name="line.115"></a>
<span class="sourceLineNo">116</span>      return (es == null) ? elementSet = createElementSet() : es;<a name="line.116"></a>
<span class="sourceLineNo">117</span>    }<a name="line.117"></a>
<span class="sourceLineNo">118</span><a name="line.118"></a>
<span class="sourceLineNo">119</span>    transient Set&lt;Multiset.Entry&lt;E&gt;&gt; entrySet;<a name="line.119"></a>
<span class="sourceLineNo">120</span><a name="line.120"></a>
<span class="sourceLineNo">121</span>    @SuppressWarnings("unchecked")<a name="line.121"></a>
<span class="sourceLineNo">122</span>    @Override public Set&lt;Multiset.Entry&lt;E&gt;&gt; entrySet() {<a name="line.122"></a>
<span class="sourceLineNo">123</span>      Set&lt;Multiset.Entry&lt;E&gt;&gt; es = entrySet;<a name="line.123"></a>
<span class="sourceLineNo">124</span>      return (es == null)<a name="line.124"></a>
<span class="sourceLineNo">125</span>          // Safe because the returned set is made unmodifiable and Entry<a name="line.125"></a>
<span class="sourceLineNo">126</span>          // itself is readonly<a name="line.126"></a>
<span class="sourceLineNo">127</span>          ? entrySet = (Set) Collections.unmodifiableSet(delegate.entrySet())<a name="line.127"></a>
<span class="sourceLineNo">128</span>          : es;<a name="line.128"></a>
<span class="sourceLineNo">129</span>    }<a name="line.129"></a>
<span class="sourceLineNo">130</span><a name="line.130"></a>
<span class="sourceLineNo">131</span>    @SuppressWarnings("unchecked")<a name="line.131"></a>
<span class="sourceLineNo">132</span>    @Override public Iterator&lt;E&gt; iterator() {<a name="line.132"></a>
<span class="sourceLineNo">133</span>      // Safe because the returned Iterator is made unmodifiable<a name="line.133"></a>
<span class="sourceLineNo">134</span>      return (Iterator&lt;E&gt;) Iterators.unmodifiableIterator(delegate.iterator());<a name="line.134"></a>
<span class="sourceLineNo">135</span>    }<a name="line.135"></a>
<span class="sourceLineNo">136</span><a name="line.136"></a>
<span class="sourceLineNo">137</span>    @Override public boolean add(E element) {<a name="line.137"></a>
<span class="sourceLineNo">138</span>      throw new UnsupportedOperationException();<a name="line.138"></a>
<span class="sourceLineNo">139</span>    }<a name="line.139"></a>
<span class="sourceLineNo">140</span><a name="line.140"></a>
<span class="sourceLineNo">141</span>    @Override public int add(E element, int occurences) {<a name="line.141"></a>
<span class="sourceLineNo">142</span>      throw new UnsupportedOperationException();<a name="line.142"></a>
<span class="sourceLineNo">143</span>    }<a name="line.143"></a>
<span class="sourceLineNo">144</span><a name="line.144"></a>
<span class="sourceLineNo">145</span>    @Override public boolean addAll(Collection&lt;? extends E&gt; elementsToAdd) {<a name="line.145"></a>
<span class="sourceLineNo">146</span>      throw new UnsupportedOperationException();<a name="line.146"></a>
<span class="sourceLineNo">147</span>    }<a name="line.147"></a>
<span class="sourceLineNo">148</span><a name="line.148"></a>
<span class="sourceLineNo">149</span>    @Override public boolean remove(Object element) {<a name="line.149"></a>
<span class="sourceLineNo">150</span>      throw new UnsupportedOperationException();<a name="line.150"></a>
<span class="sourceLineNo">151</span>    }<a name="line.151"></a>
<span class="sourceLineNo">152</span><a name="line.152"></a>
<span class="sourceLineNo">153</span>    @Override public int remove(Object element, int occurrences) {<a name="line.153"></a>
<span class="sourceLineNo">154</span>      throw new UnsupportedOperationException();<a name="line.154"></a>
<span class="sourceLineNo">155</span>    }<a name="line.155"></a>
<span class="sourceLineNo">156</span><a name="line.156"></a>
<span class="sourceLineNo">157</span>    @Override public boolean removeAll(Collection&lt;?&gt; elementsToRemove) {<a name="line.157"></a>
<span class="sourceLineNo">158</span>      throw new UnsupportedOperationException();<a name="line.158"></a>
<span class="sourceLineNo">159</span>    }<a name="line.159"></a>
<span class="sourceLineNo">160</span><a name="line.160"></a>
<span class="sourceLineNo">161</span>    @Override public boolean retainAll(Collection&lt;?&gt; elementsToRetain) {<a name="line.161"></a>
<span class="sourceLineNo">162</span>      throw new UnsupportedOperationException();<a name="line.162"></a>
<span class="sourceLineNo">163</span>    }<a name="line.163"></a>
<span class="sourceLineNo">164</span><a name="line.164"></a>
<span class="sourceLineNo">165</span>    @Override public void clear() {<a name="line.165"></a>
<span class="sourceLineNo">166</span>      throw new UnsupportedOperationException();<a name="line.166"></a>
<span class="sourceLineNo">167</span>    }<a name="line.167"></a>
<span class="sourceLineNo">168</span><a name="line.168"></a>
<span class="sourceLineNo">169</span>    @Override public int setCount(E element, int count) {<a name="line.169"></a>
<span class="sourceLineNo">170</span>      throw new UnsupportedOperationException();<a name="line.170"></a>
<span class="sourceLineNo">171</span>    }<a name="line.171"></a>
<span class="sourceLineNo">172</span><a name="line.172"></a>
<span class="sourceLineNo">173</span>    @Override public boolean setCount(E element, int oldCount, int newCount) {<a name="line.173"></a>
<span class="sourceLineNo">174</span>      throw new UnsupportedOperationException();<a name="line.174"></a>
<span class="sourceLineNo">175</span>    }<a name="line.175"></a>
<span class="sourceLineNo">176</span><a name="line.176"></a>
<span class="sourceLineNo">177</span>    private static final long serialVersionUID = 0;<a name="line.177"></a>
<span class="sourceLineNo">178</span>  }<a name="line.178"></a>
<span class="sourceLineNo">179</span><a name="line.179"></a>
<span class="sourceLineNo">180</span>  /**<a name="line.180"></a>
<span class="sourceLineNo">181</span>   * Returns an unmodifiable view of the specified sorted multiset. Query<a name="line.181"></a>
<span class="sourceLineNo">182</span>   * operations on the returned multiset "read through" to the specified<a name="line.182"></a>
<span class="sourceLineNo">183</span>   * multiset, and attempts to modify the returned multiset result in an {@link<a name="line.183"></a>
<span class="sourceLineNo">184</span>   * UnsupportedOperationException}.<a name="line.184"></a>
<span class="sourceLineNo">185</span>   *<a name="line.185"></a>
<span class="sourceLineNo">186</span>   * &lt;p&gt;The returned multiset will be serializable if the specified multiset is<a name="line.186"></a>
<span class="sourceLineNo">187</span>   * serializable.<a name="line.187"></a>
<span class="sourceLineNo">188</span>   *<a name="line.188"></a>
<span class="sourceLineNo">189</span>   * @param sortedMultiset the sorted multiset for which an unmodifiable view is<a name="line.189"></a>
<span class="sourceLineNo">190</span>   *     to be generated<a name="line.190"></a>
<span class="sourceLineNo">191</span>   * @return an unmodifiable view of the multiset<a name="line.191"></a>
<span class="sourceLineNo">192</span>   * @since 11.0<a name="line.192"></a>
<span class="sourceLineNo">193</span>   */<a name="line.193"></a>
<span class="sourceLineNo">194</span>  @Beta<a name="line.194"></a>
<span class="sourceLineNo">195</span>  public static &lt;E&gt; SortedMultiset&lt;E&gt; unmodifiableSortedMultiset(<a name="line.195"></a>
<span class="sourceLineNo">196</span>      SortedMultiset&lt;E&gt; sortedMultiset) {<a name="line.196"></a>
<span class="sourceLineNo">197</span>    return new UnmodifiableSortedMultiset&lt;E&gt;(checkNotNull(sortedMultiset));<a name="line.197"></a>
<span class="sourceLineNo">198</span>  }<a name="line.198"></a>
<span class="sourceLineNo">199</span><a name="line.199"></a>
<span class="sourceLineNo">200</span>  private static final class UnmodifiableSortedMultiset&lt;E&gt;<a name="line.200"></a>
<span class="sourceLineNo">201</span>      extends UnmodifiableMultiset&lt;E&gt; implements SortedMultiset&lt;E&gt; {<a name="line.201"></a>
<span class="sourceLineNo">202</span>    private UnmodifiableSortedMultiset(SortedMultiset&lt;E&gt; delegate) {<a name="line.202"></a>
<span class="sourceLineNo">203</span>      super(delegate);<a name="line.203"></a>
<span class="sourceLineNo">204</span>    }<a name="line.204"></a>
<span class="sourceLineNo">205</span><a name="line.205"></a>
<span class="sourceLineNo">206</span>    @Override<a name="line.206"></a>
<span class="sourceLineNo">207</span>    protected SortedMultiset&lt;E&gt; delegate() {<a name="line.207"></a>
<span class="sourceLineNo">208</span>      return (SortedMultiset&lt;E&gt;) super.delegate();<a name="line.208"></a>
<span class="sourceLineNo">209</span>    }<a name="line.209"></a>
<span class="sourceLineNo">210</span><a name="line.210"></a>
<span class="sourceLineNo">211</span>    @Override<a name="line.211"></a>
<span class="sourceLineNo">212</span>    public Comparator&lt;? super E&gt; comparator() {<a name="line.212"></a>
<span class="sourceLineNo">213</span>      return delegate().comparator();<a name="line.213"></a>
<span class="sourceLineNo">214</span>    }<a name="line.214"></a>
<span class="sourceLineNo">215</span><a name="line.215"></a>
<span class="sourceLineNo">216</span>    @Override<a name="line.216"></a>
<span class="sourceLineNo">217</span>    SortedSet&lt;E&gt; createElementSet() {<a name="line.217"></a>
<span class="sourceLineNo">218</span>      return Collections.unmodifiableSortedSet(delegate().elementSet());<a name="line.218"></a>
<span class="sourceLineNo">219</span>    }<a name="line.219"></a>
<span class="sourceLineNo">220</span><a name="line.220"></a>
<span class="sourceLineNo">221</span>    @Override<a name="line.221"></a>
<span class="sourceLineNo">222</span>    public SortedSet&lt;E&gt; elementSet() {<a name="line.222"></a>
<span class="sourceLineNo">223</span>      return (SortedSet&lt;E&gt;) super.elementSet();<a name="line.223"></a>
<span class="sourceLineNo">224</span>    }<a name="line.224"></a>
<span class="sourceLineNo">225</span><a name="line.225"></a>
<span class="sourceLineNo">226</span>    private transient UnmodifiableSortedMultiset&lt;E&gt; descendingMultiset;<a name="line.226"></a>
<span class="sourceLineNo">227</span><a name="line.227"></a>
<span class="sourceLineNo">228</span>    @Override<a name="line.228"></a>
<span class="sourceLineNo">229</span>    public SortedMultiset&lt;E&gt; descendingMultiset() {<a name="line.229"></a>
<span class="sourceLineNo">230</span>      UnmodifiableSortedMultiset&lt;E&gt; result = descendingMultiset;<a name="line.230"></a>
<span class="sourceLineNo">231</span>      if (result == null) {<a name="line.231"></a>
<span class="sourceLineNo">232</span>        result = new UnmodifiableSortedMultiset&lt;E&gt;(<a name="line.232"></a>
<span class="sourceLineNo">233</span>            delegate().descendingMultiset());<a name="line.233"></a>
<span class="sourceLineNo">234</span>        result.descendingMultiset = this;<a name="line.234"></a>
<span class="sourceLineNo">235</span>        return descendingMultiset = result;<a name="line.235"></a>
<span class="sourceLineNo">236</span>      }<a name="line.236"></a>
<span class="sourceLineNo">237</span>      return result;<a name="line.237"></a>
<span class="sourceLineNo">238</span>    }<a name="line.238"></a>
<span class="sourceLineNo">239</span><a name="line.239"></a>
<span class="sourceLineNo">240</span>    @Override<a name="line.240"></a>
<span class="sourceLineNo">241</span>    public Entry&lt;E&gt; firstEntry() {<a name="line.241"></a>
<span class="sourceLineNo">242</span>      return delegate().firstEntry();<a name="line.242"></a>
<span class="sourceLineNo">243</span>    }<a name="line.243"></a>
<span class="sourceLineNo">244</span><a name="line.244"></a>
<span class="sourceLineNo">245</span>    @Override<a name="line.245"></a>
<span class="sourceLineNo">246</span>    public Entry&lt;E&gt; lastEntry() {<a name="line.246"></a>
<span class="sourceLineNo">247</span>      return delegate().lastEntry();<a name="line.247"></a>
<span class="sourceLineNo">248</span>    }<a name="line.248"></a>
<span class="sourceLineNo">249</span><a name="line.249"></a>
<span class="sourceLineNo">250</span>    @Override<a name="line.250"></a>
<span class="sourceLineNo">251</span>    public Entry&lt;E&gt; pollFirstEntry() {<a name="line.251"></a>
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<span class="sourceLineNo">752</span>   * Returns {@code true} if {@code subMultiset.count(o) &lt;=<a name="line.752"></a>
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<span class="sourceLineNo">754</span>   *<a name="line.754"></a>
<span class="sourceLineNo">755</span>   * @since 10.0<a name="line.755"></a>
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<span class="sourceLineNo">773</span>   *<a name="line.773"></a>
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<span class="sourceLineNo">775</span>   * {@code Math.min(multisetToModify.count(e),<a name="line.775"></a>
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<span class="sourceLineNo">779</span>   * {@code multisetToModify} instead of returning a view.<a name="line.779"></a>
<span class="sourceLineNo">780</span>   *<a name="line.780"></a>
<span class="sourceLineNo">781</span>   * &lt;p&gt;In contrast, {@code multisetToModify.retainAll(multisetToRetain)} keeps<a name="line.781"></a>
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<span class="sourceLineNo">784</span>   *<a name="line.784"></a>
<span class="sourceLineNo">785</span>   * @return {@code true} if {@code multisetToModify} was changed as a result<a name="line.785"></a>
<span class="sourceLineNo">786</span>   *         of this operation<a name="line.786"></a>
<span class="sourceLineNo">787</span>   * @since 10.0<a name="line.787"></a>
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<span class="sourceLineNo">795</span>   * Delegate implementation which cares about the element type.<a name="line.795"></a>
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<span class="sourceLineNo">821</span>   *<a name="line.821"></a>
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<span class="sourceLineNo">826</span>   *<a name="line.826"></a>
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<span class="sourceLineNo">828</span>   * {@link Multiset#removeAll removeAll}{@code (occurrencesToRemove)}, which<a name="line.828"></a>
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<span class="sourceLineNo">836</span>   *<a name="line.836"></a>
<span class="sourceLineNo">837</span>   * @return {@code true} if {@code multisetToModify} was changed as a result of<a name="line.837"></a>
<span class="sourceLineNo">838</span>   *         this operation<a name="line.838"></a>
<span class="sourceLineNo">839</span>   * @since 10.0<a name="line.839"></a>
<span class="sourceLineNo">840</span>   */<a name="line.840"></a>
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<span class="sourceLineNo">846</span>  /**<a name="line.846"></a>
<span class="sourceLineNo">847</span>   * Delegate that cares about the element types in occurrencesToRemove.<a name="line.847"></a>
<span class="sourceLineNo">848</span>   */<a name="line.848"></a>
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<span class="sourceLineNo">853</span>    checkNotNull(occurrencesToRemove);<a name="line.853"></a>
<span class="sourceLineNo">854</span><a name="line.854"></a>
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<span class="sourceLineNo">872</span>   * Implementation of the {@code equals}, {@code hashCode}, and<a name="line.872"></a>
<span class="sourceLineNo">873</span>   * {@code toString} methods of {@link Multiset.Entry}.<a name="line.873"></a>
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<span class="sourceLineNo">877</span>     * Indicates whether an object equals this entry, following the behavior<a name="line.877"></a>
<span class="sourceLineNo">878</span>     * specified in {@link Multiset.Entry#equals}.<a name="line.878"></a>
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<span class="sourceLineNo">890</span>     * Return this entry's hash code, following the behavior specified in<a name="line.890"></a>
<span class="sourceLineNo">891</span>     * {@link Multiset.Entry#hashCode}.<a name="line.891"></a>
<span class="sourceLineNo">892</span>     */<a name="line.892"></a>
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<span class="sourceLineNo">898</span>    /**<a name="line.898"></a>
<span class="sourceLineNo">899</span>     * Returns a string representation of this multiset entry. The string<a name="line.899"></a>
<span class="sourceLineNo">900</span>     * representation consists of the associated element if the associated count<a name="line.900"></a>
<span class="sourceLineNo">901</span>     * is one, and otherwise the associated element followed by the characters<a name="line.901"></a>
<span class="sourceLineNo">902</span>     * " x " (space, x and space) followed by the count. Elements and counts are<a name="line.902"></a>
<span class="sourceLineNo">903</span>     * converted to strings as by {@code String.valueOf}.<a name="line.903"></a>
<span class="sourceLineNo">904</span>     */<a name="line.904"></a>
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<span class="sourceLineNo">913</span>   * An implementation of {@link Multiset#equals}.<a name="line.913"></a>
<span class="sourceLineNo">914</span>   */<a name="line.914"></a>
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<span class="sourceLineNo">921</span>      /*<a name="line.921"></a>
<span class="sourceLineNo">922</span>       * We can't simply check whether the entry sets are equal, since that<a name="line.922"></a>
<span class="sourceLineNo">923</span>       * approach fails when a TreeMultiset has a comparator that returns 0<a name="line.923"></a>
<span class="sourceLineNo">924</span>       * when passed unequal elements.<a name="line.924"></a>
<span class="sourceLineNo">925</span>       */<a name="line.925"></a>
<span class="sourceLineNo">926</span><a name="line.926"></a>
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<span class="sourceLineNo">941</span>  /**<a name="line.941"></a>
<span class="sourceLineNo">942</span>   * An implementation of {@link Multiset#addAll}.<a name="line.942"></a>
<span class="sourceLineNo">943</span>   */<a name="line.943"></a>
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<span class="sourceLineNo">951</span>      for (Entry&lt;? extends E&gt; entry : that.entrySet()) {<a name="line.951"></a>
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<span class="sourceLineNo">960</span>  /**<a name="line.960"></a>
<span class="sourceLineNo">961</span>   * An implementation of {@link Multiset#removeAll}.<a name="line.961"></a>
<span class="sourceLineNo">962</span>   */<a name="line.962"></a>
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<span class="sourceLineNo">967</span><a name="line.967"></a>
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<span class="sourceLineNo">971</span>  /**<a name="line.971"></a>
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<span class="sourceLineNo">973</span>   */<a name="line.973"></a>
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<span class="sourceLineNo">978</span>        ? ((Multiset&lt;?&gt;) elementsToRetain).elementSet() : elementsToRetain;<a name="line.978"></a>
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<span class="sourceLineNo">983</span>  /**<a name="line.983"></a>
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